Basionym Name:Parmelia muscigena var. squarrosa Ach., Lich. Univ.: 473 (1810)
Homotypic synonyms:Lichen diatrypus var. squarrosa (Ach.) Lam., Encycl. Méth. Bot., Suppl. (Paris) 3(2): 406 (1813)Physcia muscigena f. squarrosa (Ach.) Lynge, Vidensk. Skrifter, I. Math.-naturv. Klasse(no. 8): 59 (1916)Physcia muscigena var. squarrosa (Ach.) Lynge, Meddr Grønland, Biosc. 64(11): 287 (1923)Physconia muscigena f. squarrosa (Ach.) J.C. Wei & Y.M. Jiang, [Lichens of Xizang] (China): 112 (1986)